The use of the Flying Shear in Rolling Mills is an ancient but, at the same time, relatively new technological development. During the last hundred years, it has been steadily replacing the more cumbersome and costly pure-roller shears, which had to be set up and adjusted, a separate operation for each new production run. Modern rolling mills, where many cuts are required (up to 2 or 3 thousand) per day, have as many as thirty or forty shearing machines operating simultaneously.
Perks of Using Flying Shear
1. Shear Heads:
In the rolling mill, the shear head moves in a vertical plane. As it moves upwards, it progressively cuts down on the thickness of the steel, and as it goes downwards, it progressively inches up again. That is much more convenient than setting up and adjusting a separate set of shears for each new-rolled product. Because of this, Flying Shears can cut through rolled products composed of about 10% alloy (mixing).
2. Roll Cut:
A second advantage is that the Flying Shear can cut through the rolled [metal] without touching the sheet. It allows for a finish that is of a very high quality. A simple comparison can be made by placing a sheet of paper on top of another and then carrying out the same action described above. The result would leave residue, crinkles and other artifacts because the blades physically touch one another.
3. The ability to cut long product runs:
As a result of the first two advantages, a rolling mill operator can cut product runs that are much longer than he would be able to do using pure-roller shears. The reason for this is that the length and width of the cuts are set and controlled by simply moving the head in its vertical position up or down. With the pure-roller shears, a frame and hydraulic system must be set up and run every time a new product run is required.
4. Cutting thickness by types of sheet:
The final benefit, in many cases, is the ability to cut through the steel of varying thicknesses. It gives rise to different levels of quality in the finished rolled products. Flying Shear allows the operator to cut through the steel of a thickness between .06 and .10 mm, allowing for a finished product with a specific composition.
What is Tail Breaker Used For?
1. The main function of the Tail Breaker is to cut the long, continuous piece of metal into smaller pieces. It does this by actually shearing it off in lengths that are between twenty and forty inches. The various sizes of tail breakers will be cut on a horizontal or vertical plane, depending on the design and purpose of the tail breaker. At rolling mills, these machines are located directly behind the shear.
2. The Tail Breaker can cut and curl steel into S shapes. That is done by inserting a long length of metal into the machine, moving it on a slight angle, and then turning a handle mounted on the side of the machine. It gives rise to pieces of metal that are used for many purposes, including reinforcing beams in buildings.
Conclusion:
The main material used in the Tail Breaker is cast iron, which gives the machine a very long life. It is an extremely versatile piece of machinery because it allows the ability to cut pieces of metal in both circular and non-circular shapes. Some breakers even have an automatic pressure release mechanism that works by cutting off an excess length from the rolled steel products. It gives rise to a finished product that is of very high quality.
